Wrench



Jan. 2, I945. c, BRi 2,366,312

WRENCH Filed Nov. 8, 1943 IN VEN TOR.

ARcI-u BALD C. BR/NT/VALL Patented Jan. 2, 1945 UNITED STATES *PATENTOFFICE WRENCH. I, g Archibald C. Brintnall, Denver, 0010.

Application November 8, 1943, Serial No. 509,516

(c1. s1 -7s) 8 Claims.

' round pipes and bolts or with nuts, either square or hexagonal.

It is a further object of this invention to produce a wrench having anauxiliary gripping jaw or member that can be moved into clampingposition during the operation of the wrench and which serves tofacilitate the operation thereof.

The above and any other objects that may become apparent as thisdescription proceeds are attained by means of a construction and anarrangement of parts that will now bedescribed in detail, and for thispurpose reference will be had to the accompanying drawing in which theinvention has been illustrated in its preferred form, and in which: 1

Figure 1 is a top plan View of the wrench; Figure 2 is a side elevationlooking in the direction of arrow 2, in Figure 1;

Figure 3 is a transverse section taken on line 3-3, Figure 1;

nectedwith each other bymeans of rivets 8. A spacer 9 is positionedbetween the outer ends of the handle and are held in position by meansof a rivet l0. Pivoted at H is an auxiliary handle .12 that is providedon its inner surface with serrations l3. A slot 14 extends transverselyacross the auxiliary handle I2 and a rivet lbextends through the handlesand through the slot Hand forms a limit stop which prevents the handlefrom being rotated about its pivot I l to a greater extent thannecessary for proper operation. The auxiliary handle I2, which alsofunctions as a clamping jaw member, serves to grip a nut or a bolt andto urge it against the serrations 6 on the rearwardly extending jaws 5.'By means of the auxiliary handle the nuts can be held from dropping andany round member can be urged against the teeth with considerable force,thereby assuring a firm gripping action,

In Figures 4, 5 and 6, a slightly modified form of construction has beenshown. In this embodiment, the sides 4 are identical and do not have theinwardly offset portions shown in Figures 1 and 2. Instead of ofisettingthe ends they are separated by a piece of steel which has beendesignated by reference numeral 16. The steel insert is held in place bymeans of rivets 8 and the inner edge of thi steel insert projectsinwardly beyond the parts 5 and is provided with teeth.

By this construction the handles 1 can be made of Figure 4 is a sideelevation similar to that I shown in Figure 2, but showing a slightlymodified form;

Figure 5 is a fragmentary plan view looking in the direction of arrow 5,in Figure 4; and

Figure 6 is a cross section taken on line 6-6, Figure 5.

The wrench consists of two substantially identical sides which have beendesignated by reference numeral 4, In the embodiment shown in Figures 1to 3, these two sides are identical with the exception that one is aright and the other is a left. That part which extends the distanceindicated by it comprises the handle and the other portion the jawportion of the wrench.

It will be observed that the parts 4 have a reversely extending portion5, whose inner edge is serrated as indicated at 6 and makes an angle wwith the opposite side of the handle. The re- Versely bent or hookportions 5 are preferably connected with the other part of the sides bya curved portion which has been designated by reference numeral 1. Theparts designated by reference numeral 5 are offset towards each other inthe manner shown in Figure 2 and, are cona soft steel, if desired, asthe hard steel insert it only needs to be serrated. The advantage ofthis construction is that the two handle members are identical and cantherefore be manufactured by a single die; whereas with the right and.left construction shown in Figures 1 and 2, two dies are necessary. Theauxiliary handle or clamping member l2 does not necessarily have to haveserrations corresponding to those indicated by reference numeral 13 asits primary function is to urge the bolt or nut or pipe against theserrations on the reversely extending jaw.

Attention is called to the great simplicity of this deviceandparticularly to the use of the auxiliary handle or jaw which greatlyimproves the operation over what it would be in case this element wereomitted.

The pivot point H may be varied in position from that shown in thedrawing, depending on the exact shape of the auxiliary clamping jaw orhandle, but for the shape shown in the drawing, the position of pivot IIis substantially correct.

From the above description it will be seen that this wrench is of anexceedingly simple construction; that the parts can be cut from suitablestock by means of dies and that only a small amount of labor will benecessary for the assemblying. The wrench thus formed can be used inconnection with nuts and bolts of many different sizes and by increasingthe length of slot l5, it is possible to bring the serrated edge l3 veryclose to the serrated edge 6 which may be desirable in some instances.

Having described the invention what is claimed as new is: V

1'. A wrench having a handle one end of which is rearwardly bent so asto form a hook whose sides form an acute angle, the rearwardly extending jaw having its inner edge serrated and a relatively straightauxiliary clamping jaw piv= oted at one end to the wrench handleadjacent the reverse bend, the inner edges of the auxiliary jaw oppositethe serrated edge, being movable into the angular space for clamping andholding a nut or the like, the free end of the auxiliary clamping jawforming'a lever and-projecting beyond theoutei' edged the handle wherebya force tending-torotate a nut will urge the auxiliary jaw into clampingposition.

2. A wrench of the-type specified comprising a combined handle and jawformed from two identical pieces, each piece eomprising a handle portionand a jaw portion formed by a rearwardly extending angularly relatedpart, a spacer between the extreme ends of the handle, a steel spacerbetween the reversely extending jaws, the inner edge of the steel spacerhaving serrations that extend beyond the corresponding edges of thejaws, means for securing the handles and jaws to the spacers, and anauxiliary clamping jaw positioned between the handles and pivotallyconnected with the latter at a point near the reverse bend, the free endof the auxiliary clamping jaw extending beyond the sides of the handles,whereby any force applied to the wrench tending to turn a nut will urgethe clamping jaw into engagement therewith. 3. A wrench having a handleone end of which is rearwardly bent so as to form a hook whose sidesform an acute angle, and a relatively straight auxiliary clamping jawpivoted at one end to the wrench handle adjacent the reverse bend,

the inner edge of the auxiliary jaw, opposite the

